Have 1992 240 DL Wagon 2.3 liter non turbo red block, ran 10w-30 Chevron Supreme to 126M miles, then c/o to Amsoil ATM 10w-30 currently w/160M miles. Used Mobil 1 10w-30 EP for one OCI, this engine prefers Amsoil based on UOA. Location is Houston,TX.